Journal ArticleDOI
White Polymer Light-Emitting Devices for Solid-State Lighting: Materials, Devices, and Recent Progress
TLDR
The recent advances in WPLEDs are summarized with special attention paid to the design of novel luminescent dopants and device structures that minimize the gap from other lighting sources such as fluorescent lamps, light-emitting diodes based on inorganic semiconductors, and vacuum-deposited small-molecular devices, thus rendering WPL EDs equally competitive.Abstract:
White polymer light-emitting devices (WPLEDs) have become a field of immense interest in both scientific and industrial communities. They have unique advantages such as low cost, light weight, ease of device fabrication, and large area manufacturing. Applications of WPLEDs for solid-state lighting are of special interest because about 20% of the generated electricity on the earth is consumed by lighting. To date, incandescent light bulbs (with a typical power efficiency of 12-17 lm W(-1) ) and fluorescent lamps (about 40-70 lm W(-1) ) are the most widely used lighting sources. However, incandescent light bulbs convert 90% of their consumed power into heat while fluorescent lamps contain a small but significant amount of toxic mercury in the tube, which complicates an environmentally friendly disposal. Remarkably, the device performances of WPLEDs have recently been demonstrated to be as efficient as those of fluorescent lamps. Here, we summarize the recent advances in WPLEDs with special attention paid to the design of novel luminescent dopants and device structures. Such advancements minimize the gap (for both efficiency and stability) from other lighting sources such as fluorescent lamps, light-emitting diodes based on inorganic semiconductors, and vacuum-deposited small-molecular devices, thus rendering WPLEDs equally competitive as these counterparts currently in use for illumination purposes.read more
Citations
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Journal ArticleDOI
Achieving Persistent Room Temperature Phosphorescence and Remarkable Mechanochromism from Pure Organic Luminogens
Yongyang Gong,Gan Chen,Qian Peng,Wang Zhang Yuan,Yujun Xie,Shuhong Li,Yongming Zhang,Ben Zhong Tang +7 more
TL;DR: A perfect crystal with dense molecular packing and effective inter-molecular interactions isolates the triplet excitons from quenching sites and significantly blocks the high-energy vibrational dissipation, thus yielding long-lasting RTP.
Journal ArticleDOI
Single-Phase White-Light-Emitting and Photoluminescent Color-Tuning Coordination Assemblies
TL;DR: Some state-of-the-art assembly methods and successful design models relevant to the above three categories are elaborated to demonstrate how to achieve efficient and controllable white-light emission in a single-phase material through a tunable PL approach.
Journal ArticleDOI
A colour-tunable, weavable fibre-shaped polymer light-emitting electrochemical cell
Zhitao Zhang,Kunping Guo,Yiming Li,Xueyi Li,Guozhen Guan,Houpu Li,Yongfeng Luo,Fangyuan Zhao,Qi Zhang,Bin Wei,Qibing Pei,Huisheng Peng +11 more
TL;DR: In this article, a fiber-shaped light emitting electrochemical cell that can be woven and integrated with textiles offers new opportunities for smart fabrics, which can be used for wearable devices.
Journal ArticleDOI
A facile strategy for realizing room temperature phosphorescence and single molecule white light emission
Jianguo Wang,Xinggui Gu,Xinggui Gu,Huili Ma,Qian Peng,Xiaobo Huang,Xiaoyan Zheng,Simon H. P. Sung,Guo-Gang Shan,Jacky Wing Yip Lam,Zhigang Shuai,Ben Zhong Tang,Ben Zhong Tang +12 more
TL;DR: A facile strategy of heavy-atom-participated anion–π+ interactions is proposed to construct RTP-active organic salt compounds (1,2,3,4-tetraphenyloxazoliums with different counterions) by exchanging the counterion with a heavy halide ion.
Journal ArticleDOI
Energy materials based on metal Schiff base complexes
TL;DR: The metal Schiff base complexes represent a class of compounds that have become a field of immense interest because of their intriguing chemical and physical properties, and their wide-ranging applications in a number of scientific areas as mentioned in this paper.
References
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Journal ArticleDOI
White organic light-emitting diodes with fluorescent tube efficiency
Sebastian Reineke,Frank Lindner,Gregor Schwartz,Nico Seidler,Karsten Walzer,Björn Lüssem,Karl Leo +6 more
TL;DR: An improved OLED structure which reaches fluorescent tube efficiency and focuses on reducing energetic and ohmic losses that occur during electron–photon conversion, which could make white-light OLEDs, with their soft area light and high colour-rendering qualities, the light sources of choice for the future.
Journal ArticleDOI
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Yiru Sun,Noel C. Giebink,Hiroshi Kanno,Biwu Ma,Mark E. Thompson,Stephen R. Forrest,Stephen R. Forrest +6 more
TL;DR: This device challenges incandescent sources by exhibiting total external quantum and power efficiencies that peak at 18.7 ± 0.6 lm W-1, respectively, and two distinct modes of energy transfer within this device serve to channel nearly all of the triplet energy to the phosphorescent dopants, retaining the singlet energy exclusively on the blue fluorescent dopant.
Journal ArticleDOI
White Organic Light‐Emitting Devices for Solid‐State Lighting
TL;DR: In this article, the advantages and disadvantages of several WOLED architectures in terms of efficiency and color quality are discussed, as well as their widespread acceptance as solid-state lighting sources.
Journal ArticleDOI
Recent Progresses on Materials for Electrophosphorescent Organic Light-Emitting Devices
TL;DR: Blue phosphorescence approaching the theoretical efficiency has also been achieved, which may overcome the final obstacle against the commercialization of full color display and white light sources from phosphorescent materials.
Journal ArticleDOI
Recent advances in white organic light-emitting materials and devices (WOLEDs).
TL;DR: The types of materials (small molecules and polymers) that have been used to fabricate WOLEDs are described and a range of device architectures are presented and appraised.
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